Try
Lakeview RV Park which is about 2 or 3 miles from the track. They run buses up to the track so you don't have to worry about driving. Full hook ups, pool, but the lake is down as they are working on the dam. Campground stays mostly calm, not a big party place. There are 2 bar-b-que places nearby, Ridgewood or Pardners that are very good.
Shadrack Campgroundis full hookup and is located very close to track, about a 1/2 or so walk. There are others in the area if you want to drive in.
Tickets will be plentiful around the track, track still has tickets left so you could check with them to see the seats available.
